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Validity and reliability of the Medical Outcomes Study Short Form-20 questionnaire as a measure of quality of life in elderly people living at home
Author(s)Daniel J Carver, Chere A Chapman, Vince Salazar Thomas
Journal titleAge and Ageing, vol 28, no 2, March 1999
Pagespp 169-174
KeywordsLiving in the community ; Health [elderly] ; Life satisfaction ; Evaluation ; Reliability ; Canada.
AnnotationThe Medical Outcomes Short Study Form-20 (SF-20) questionnaire is recommended for health-related quality of life research, but there is little information on its usefulness for older people. To evaluate the SF-20, the authors studied its measurement properties in a community-dwelling sample of 333 older people from the Canadian Study of Health and Aging (CSHA). Assessment of content validity revealed that important domains - particularly those relevant to health-related quality of life - were lacking, while others appeared to be inappropriately combined. Using Spearman correlation coefficients, the SF-20 had acceptable convergent and discriminant validity. A principal components analysis provided evidence for internal consistency for some of the sub-scales. Evidence for test-retest reliability was good. However, there are insufficient data to recommend the routine use of SF-20 as a measure of the outcome of care for older people. (RH).
Accession NumberCPA-990429006 A
ClassmarkK4: CC: F:5HH: 4C: 5HC: 7S

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